Apparatus for removing excess spelter from hot galvanized articles



c. e. ERICSON. I APPARATUS FOR REMOVING EXCESS SPELTER FROM HOTGALVANIZED ARTICLES. APPLICATION FILED FEB. 7 192].

1,390,990. PatentedSept. 20,1921.

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UNITED STATES PA'raNr OFFICE.

08mm G. EBIOSON', OF TORONTO, ONTARIO, OLNLDA.

"PiiA-TUB FOB REMOVING EXCESS SPELTEB FRO! HOT GALVANIZED ARTICLES.

Application filed February 7, 1921.

This invention relates to apparatus for re-.

moving excess spelter from hot galvanized articles, and particularlyadapted for the.

treatment of rods or bolts, and my object is to devise a machine forthis purpose operatin by centrifugal action, which can be quic 1yinstalled at small initial cost, and which will not in any way injure ord stort the objects treated.

I attain my object by means of the constructions hereinafter describedand illustrated in the accompanying drawings in which-- Figure 1 is aside elevation, partly broken away, of apparatus constructed 1naccordance with my invention; and

Fig. 2 an end elevation of the same.

In the drawings like numerals of reference indicate corresponding partsin the different figures.

1 is a frame, preferably formed of structural metal and suitably shapedto support the different parts. This frame is adapted to car twosurfaces, one at least ofwhich is moving, and which are adapted toengage the articles to be treated to impart to them a rapid rotarymovement on their own axes, while at the same time they are caused totravel longitudinally of the apparatus for discharge after treatment.

In the preferred form, one of the surfaces is formed as a stationarytable 2 supported on the frame as hereinafter described. Above thistable is en ported the traveling surface, which is pre erably formed asan endless belt 3 running on pulleys 4 suitably journaled on the frame 1at opposite ends of the table.

One of these pulleys is carried by a shaft 5, to which is connected thedrive pulley 6 by means of which the belt may be driven at a high rateof speed from any suitable source of power.

As the surfaces between which the articles are rolled require to bespaced to suit the diameters of the articles being rolled, it isSpecification of Letters Patent.

Patented Sept. 20, 1921.

Serial No. 443,271.

necessary to make these surfaces adjustable relative to one another. Thesimplest method is to make the table 2 vertically ad ustabIe on theframe 1. I therefore pro- VIdB bolt and slot connections 7 betweenvertlcal members of the frame 1 and the cross members 8 supporting theopposite ends of the table.

To facilitate the introduction of the articles to be treated between thesurfaces which effect the rolling movement, I upwardly curve the feedend 9 of 4 the table. Any roundpnapproximately round articleplaced onth1s inclined feed end will, under the action of gravity, roll downuntil it reaches a pos tion where it will be engaged by the travelingbelt. It is necessary of course, that the articles shall be fed withtheir axes exactly at right angles to their direction of travel throughthe apparatus. I therefore provide movable alining stops against whichthe articles to be treated may be placed. The preferred arrangement isshown in the drawings, the stops comprising a pair of arms 10 rigidlyconnected to move simultaneously and journaled in brackets 11 secured tothe under side of the feed end 9 of the table. Normally the stops areheld in their operative position by a coil spring 15 and treadle 16 isprovided suitably connected to the stops whereby they may be depressedat will.

As the articles being treated are caused to roll very rapidly by theaction of the belt, it is advisable to provide some means for checkingtheir speed before their discharge from the machine so as to avoiddamage due to their striking violently on previously treated articles orother parts. I therefore provide the upwardly curved discharge end 12 onthe table. As the articles after treatment roll up this discharge end,their rolling and forward movements are gradually checked owing to theinfluence of gravity and they drop off the end of the discharge portionof the table with their momentum practically destroyed.

As the belt requires to be made of material which would suffer damagefrom excessive heat, it is necessary to provide means for cooling theportions of the articles to be treated which contact with the belt. I

cooling fluid'such as water or airv may be caused to flow and dischargedfrom suitable jets toward the table so as to contact with the articlesas they move down the feed end thereof.

It will be understood that the artlcles o erated on 'will be longer thanthe width 0? the table and'belt, and will therefore project beyondthesides of the table either at one or both sides. As only the part ofthe article in contact with the belt is cooled, the end or ends remainin their heated condition with the hot spelter in a liquid conditionthereon. The high speed of rotation given to the article causes anyexcess spelter to be thrown off by centrifugal action, leaving only justsuflicient for the proper protection of the iron underneath. As thisaction produces a spray of small articles of spelter which must not beallowe to contact with the belt, I provide the inclinedsplash boards 14which extend laterally and u wardly from positions adjacent the sides ofthe table in such a manner as to completely protect the belt.

My apparatus presents many advantages over other devices for a similarpurpose with which I am acquainted, as any devices for this purpose,other than centrlfugal, are either ineffective in throwing off excessspelter or else bruise or distort the articles treated, and while theuse of centrifugal action is known, it has onl been utilized byapparatus which is com icated and expensive in installation and s ow inoperation.

y apparatus, on the contrary, is simple and the excess spelter is thrownoil in such.

a manner as to leave a very evenand uniform coating. The apparatus is esecially useful in treating hot galvanized treaded 5 bolts, as the modeof treatment removes the excess spelter from the threads without causmgany injury to the latter. I find that the work is so effectively donethat nuts may be applied to the bolts without any necessity for the slowand expensive 0 eration of recutting or re-rollin of three s which isnow 4 'commonl employe By treatin threaded bolts in t is manner, asubstantia the cost of manufacture is bolts are ready for use afterleaving the machine and also as the excess spelter is saved and may bereturned to the bath.

What I claim as my invention is 1. Apparatus for removing excess spelterfrom galvanized articles comprising a sursaving in 7 face over which aportion of an article may be rolled; and a traveling surface cooperatingwith said first mentioned surface to effect said rolling movement.

2. Ap aratus for removing excess spelter from ga vanized articlescomprising a table over which a rtion of an article may be rolled atraveing surface cooperating with the table to effect said rolling movement;

effected, as the.

and cooling means located at the feed end of the table adapted to coolthe portion of the article contacted by the traveling surface.

3. Apparatus forremoving excess spelter from ga vanized articlescomprising a table over which a portion of an article may berolled;pulleys journaled adjacent the table ends; and a belt carried on saidpulleys 00- operating with the table to effect said rolling movement.

4. Apparatus for removing excess spelter from ga vanized articlescomprising a table over which a ortion of an article may be rolled; atraveling surface-cooperating with the table to effect said rollingmovement; and an inclined feed end for the table down which thearticlesmay roll by gravity to a position for engagement between thetable and traveling surface.

5. Ap aratus for removing excess spelter from ga vanized articlescomprising a table over which a portion of an article may be rolled; atrave ing surface cooperating with the table to effect said rollinmovement; an inclined feed end for the ta 10 down which the articles mayroll by gravity to a position for enga ement between the table andtraveling sur ace; and movable alining sto s for the articles toward theupper end 0 said feed end.

6. Ap aratus for removing excess spelter from ga vanized articlescomprising a table over which a portion of an article may be rolled; andan upwardly inclined discharge and for the table extending beyond theportion of the table cooperating with the travthe portion'of the tablecooperating wit the traveling surface.

8. Apparatus for removing excess spelter from ga vanized articlescomprising a table over which a ortion of an article may be rolled; atraveling surface cooperating with cooperating with the table to effectsaid rolling movement; an-

inclined feed end for the table down which the articles may roll bygravity to a position for enga ement between the tableand travelingsurace; movable alining stops for the articles toward the upper end ofsaid feed end; and cooling means adjacent the sto s adapted tocool theortion of the artidie iubsequently contac d ace.

9. Ap aratus for removing excess spelter A from ga vanized articlescomprising a table by the traveling sur.

over which a portion of an article may be rolled; pulleys journaledadjacent the table ends; a belt carried on said pulleys cooperating withthe table to eflfect said rolling move-- ment; and means for adjustingthe relative position of the table and belt.

10. Apparatus for removing excess spelter from galvanized articlescomprising a table over which a portion of an article may berolled; atraveling surface cooperating with the table to effect said rollingmovement;

and cooling means located at the feed end of the table adapted to coolthe portion of the article contacted by the traveling surface; and alaterally and upwardly inclined splash board supported adjacent the sideof the table and extending longitudinally thereof to deflect splashes ofspelter thrown off from the rotating article.

Signed at Toronto, Ontario, this 26th day of January, 1921. 7

CHARLES G. ERICSON.

